John w



- (No Model.)

' J. W. MOINTYRE.

ISE.

Patented Mar. 6

ATTORNEY- N, PETERS. Phowumu n har. Washingkm 0.1;

UNITED STATES PATENT Enron.

JOHN W. MOINTYBE, PHILADELPHIA, PENNSYLVANIA.

VISE.

SaPECIPICAI'ION forming part of LettersPatent No. 378,893, dated March 6, 1888.

Application filed May 2, 1887. Serial No. 236,805. (No model.)

To all whom it may concern.-

Be it known that I, JOHN W. MolNTYRn, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Vises, of which the following is a specificatiomreference being had therein to the accompanying drawings, wherein Figure 1 is a side elevationof a vise with treadle attachment embodying my invention. Fig. 2 is a vertical section, and Fig. 3 an end elevation, of same.

My invention has relation to Vises of the form wherein the jaws are closed by a downward movement and opened by a reverse movement induced by the reaction ofa spring; and it has for its object to provide a simple, economical, and durable vise of the form de scribed, which may be manually operated by hand or by foot power.

My invention accordingly consists of the combination, construction, and arrangement of parts, as hereinafter more fully described and claimed.

A in the drawings represents a frame for the jaws B B,whioh frame may be of any suitable configuration,with or without an anvil,C-. This frame is provided, if desired, with suitable flanges, a, by means of which it is secured to a bench or other fixture,and it also has a socket, a, the inner walls or bore of which decreases in width or size from above downward to form a bore, a having tapering or inclined sides a, as shown more plainly in Fig. 3. In the bottom a of the socket a is an opening, a, and from the under side of the bottom of depend lugs 06', in which is journaled a shaft or pintle, a, having on its periphery a pin or hook a. One end of shaft a is threaded,and adjacent thereto is preferably an angular section to receive a bell-crank or suitably-formed handle, D, which is retained in position by a washer, a", and screw-nut a on the threaded shaft end a The jaws B B may be of any suitable configuration, and are pivoted or loosely connected at their lower ends, I), which loosely enter the socket a, and have inclined outer sides, I), and a spring, 1), between them to normally spread them apart or open them when free to do so. Between the ends b,and loosely mounted upon the pivot or pintle If, is a depending rod, E, having at its lower end an eye or hook, G, which has a chain,wire rope, rod, or other connection, e,with the pin a on shaft or pintle a, as shown more plainly in Fig. 2, surrounding the rod E and connection 6, and between the lower ends of jaws B B and the bottom a of socket a is preferably a spiral spring, G.

The operation is as follows: The reaction of spiral spring G elevates the jaws B in the socket a,and as they are elevated the spring I) spreads them apart or opens them. By raising the handle D in the direction indicated by arrow 1, Fig. 1, the shaft to and its pin a are rotated or turned in the direction indicated by arrow 2, Fig. 2,-which action pulls or draws down the connection 6 and jaws B B to closev the latter, the spring G being thereby compressed, and when released its reaction opens the jaws, as above described.

If a treadle attachment, H, is connected to handle D, as indicated in Fig. 1, pressure of the foot upon the treadle keeps the jaws closed if the handle D is maintained in loose contact with the sides a of the socket a,- but if desired the nut a and Washer a may be screwed up to cause the handle to bind against said side a, in which case the frictional contact between the side a and handle D is sufficient to hold the jaws closed, and this result is obtained when the handle alone is used for closing the j awsthat is to say, that the treadle attachment H may be'dispened with if desired.

The foregoing-described vise is applicable for use fora bench,hand,or other form of vise.

What I claim is- 1. The combinationof a socket-frame having a tapering bore, a pair of vise'jaws loosely connected adapted to said socket-bore,a spring for spreading the jaws apart, a shaft on said frame,

a connection between said shaft and jaws, an operating handle or lever for said shaft, and a spring for elevating the jaws in said socketframe, substantially as set forth.

2. The combination of socket-frame A,shaft a, mounted thereon and having a threaded end, a a handle, D, located between the socket side a and a washer and nut on end a apair of hinged jaws loosely fitting the socket in ICO 2 seems frame A, connection between said jaws and for the jaws, and mechanism for rotating said shaft,and springs for elevating the jaws in the shaft, as and for the purpose set forth. 1o socket-frame and spreading them apart, sub- In testimony whereof I affix my signature in stantially as set forth. presence of two witnesses.

5 3. In combination with asocket-frame, A, a JOHN W. MOINTYRE.

pair of vise-jaws loosely fitting the socket of WVitnesses: said frame, a shaft on said frame, a connection CHAS. F. VAN HORN,

between said jaws and frame, reacting springs S. J. VAN STAVOREN. 

